Cryogenic vessels - Cleanliness for cryogenic service (ISO 23208:2017)

This document specifies the minimum requirements for the cleanliness of all surfaces of cryogenic vessels and associated accessories that are in contact with the cryogenic fluid at any expected operating conditions.
This document defines the acceptable level of surface and particle contamination to minimize the risk of malfunction of equipment and ensure safety against ignition when in contact with oxygen or oxidizing fluids (see EN ISO 10156).

Kryo-Behälter - Reinheit für den tiefkalten Betrieb (ISO 23208:2017)

Dieses Dokument legt die Mindestanforderungen an die Reinheit aller Oberflächen von Kryo-Behältern und der zugehörigen Zubehörteilen fest, die mit dem tiefkalten Fluid bei allen zu erwartenden Betriebsbedingungen in Berührung kommen.
Dieses Dokument legt den annehmbaren Grad von Oberflächenverunreinigungen und Verunreinigungen durch Partikel fest, um das Risiko des Versagens der Einrichtung zu minimieren und Schutz gegen das Entzünden bei Berührung mit Sauerstoff oder oxidierenden Fluiden zu bieten (siehe ISO 10156).

Récipients cryogéniques - Propreté en service cryogénique (ISO 23208:2017)

Le présent document spécifie les exigences minimales de propreté applicables à toutes les surfaces des récipients cryogéniques et de leurs accessoires, qui se trouvent en contact avec le fluide cryogénique, quelles que soient les conditions d'utilisation prévues.
Le présent document définit le niveau acceptable de contamination des surfaces et des particules, afin de minimiser les risques de dysfonctionnements de l'équipement et d'assurer une protection contre les risques d'ignition lors de l'entrée en contact avec l'oxygène ou les fluides oxydants (voir l'ISO 10156).

Kriogene posode - Čistoča za obratovanje v kriogenem območju (ISO 23208:2017)

Ta dokument določa minimalne zahteve za čistočo vseh površin kriogenskih posod in povezanega pribora, ki so v stiku s kriogeno tekočino pri vseh pričakovanih obratovalnih pogojih.
Ta dokument opredeljuje mejo sprejemljivosti površinskega onesnaženja in onesnaženja z delci za zmanjšanje tveganja za motnje v delovanju opreme in zagotovitev zaščite pred vžigom ob stiku s kisikom ali tekočinami, ki oksidirajo (glej EN ISO 10156).

General Information

Status
Published
Public Enquiry End Date
03-Dec-2018
Publication Date
14-May-2019
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
11-Apr-2019
Due Date
16-Jun-2019
Completion Date
15-May-2019

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SLOVENSKI STANDARD
SIST EN ISO 23208:2019
01-junij-2019
Nadomešča:
SIST EN 12300:1999
SIST EN 12300:1999/A1:2006
Kriogene posode - Čistoča za obratovanje v kriogenem območju (ISO 23208:2017)
Cryogenic vessels - Cleanliness for cryogenic service (ISO 23208:2017)
Kryo-Behälter - Reinheit für den tiefkalten Betrieb (ISO 23208:2017)
Récipients cryogéniques - Propreté en service cryogénique (ISO 23208:2017)
Ta slovenski standard je istoveten z: EN ISO 23208:2019
ICS:
23.020.40 Proti mrazu odporne posode Cryogenic vessels
(kriogenske posode)
SIST EN ISO 23208:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 23208:2019
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SIST EN ISO 23208:2019
EN ISO 23208
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2019
EUROPÄISCHE NORM
ICS 23.020.40 Supersedes EN 12300:1998
English Version
Cryogenic vessels - Cleanliness for cryogenic service (ISO
23208:2017)

Récipients cryogéniques - Propreté en service Kryo-Behälter - Reinheit für den tiefkalten Betrieb (ISO

cryogénique (ISO 23208:2017) 23208:2017)
This European Standard was approved by CEN on 11 February 2019.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 23208:2019 E

worldwide for CEN national Members.
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SIST EN ISO 23208:2019
EN ISO 23208:2019 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 23208:2019
EN ISO 23208:2019 (E)
European foreword

The text of ISO 23208:2017 has been prepared by Technical Committee ISO/TC 220 "Cryogenic vessels”

of the International Organization for Standardization (ISO) and has been taken over as

EN ISO 23208:2019 by Technical Committee CEN/TC 268 “Cryogenic vessels and specific hydrogen

technologies applications” the secretariat of which is held by AFNOR.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by September 2019, and conflicting national standards

shall be withdrawn at the latest by September 2019.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 12300:1998.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 23208:2017 has been approved by CEN as EN ISO 23208:2019 without any modification.

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SIST EN ISO 23208:2019
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SIST EN ISO 23208:2019
INTERNATIONAL ISO
STANDARD 23208
Second edition
2017-04
Cryogenic vessels — Cleanliness for
cryogenic service
Récipients cryogéniques — Propreté en service cryogénique
Reference number
ISO 23208:2017(E)
ISO 2017
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SIST EN ISO 23208:2019
ISO 23208:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior

written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
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SIST EN ISO 23208:2019
ISO 23208:2017(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Requirements .......................................................................................................................................................................................................... 1

4.1 General requirements ....................................................................................................................................................................... 1

4.2 Additional requirements for oxygen and oxidizing fluids ................................................................................. 2

5 Cleaning procedure ............................................................................................................................................................................................ 2

6 Cleanliness evaluation .................................................................................................................................................................................... 2

7 Post-cleaning protection .............................................................................................................................................................................. 2

8 Identification ............................................................................................................................................................................................................ 3

Annex A (informative) Inspection methods .................................................................................................................................................. 4

Bibliography ................................................................................................................................................................................................................................ 7

© ISO 2017 – All rights reserved iii
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SIST EN ISO 23208:2019
ISO 23208:2017(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO’s adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: w w w . i s o .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 220, Cryogenic vessels.

This second edition cancels and replaces the first edition (ISO 23208:2005), which has been technically

revised. The main changes are in 4.1.
iv © ISO 2017 – All rights reserved
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SIST EN ISO 23208:2019
INTERNATIONAL STANDARD ISO 23208:2017(E)
Cryogenic vessels — Cleanliness for cryogenic service
1 Scope

This document specifies the minimum requirements for the cleanliness of all surfaces of cryogenic

vessels and associated accessories that are in contact with the cryogenic fluid at any expected operating

conditions.

This document defines the acceptable level of surface and particle contamination to minimize the risk of

malfunction of equipment and ensure safety against ignition when in contact with oxygen or oxidizing

fluids (see ISO 10156).
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 21010, Cryogenic vessels — Gas/materials compatibility
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
3.1
cryogenic fluid
gas which is partially liquid because of its low temperature

Note 1 to entry: It includes totally evaporated liquids and supercritical fluids.

Note 2 to entry: In the context of this document, refrigerated but non-toxic gases and mixtures of them are

referred to as cryogenic fluids.
Note 3 to entry: See also ISO 21029-1, ISO 20421-1 and/or ISO 21009-1.
3.2
oxidizing fluid
cryogenic fluid (3.1)
...

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